two-stage pump 双级泵 ; 二级泵 ; 两级泵
two stage pump coupling 两级泵联轴器
Dunoyer's two-stage pump 迪努耶尔两级扩散泵
two-stage air pump 两级空风泵
two-bank stage pump 双排阶段泵
two-stage vacuum pump 二级真空泵
two-stage compression heat pump 二级压缩循环 ; 二级压缩式热泵
two-stage diffusion pump 二级扩散泵
The pump has a two-stage, end suction, horizontally mounted back pull-out design for hot, abrasive and corrosive liquids.
该泵为两级、轴向吸入，卧式安装的后拉式泵，适用于热的、磨蚀的和腐蚀的介质。
Presents the two-stage heat pump test-bed designed by the authors, analyses the problem existed in experiment and offers the improving method.
介绍了自行设计的双级热泵实验系统，分析了实验中遇到的问题，提出了改进方案。
A two-stage compression variable frequency air source heat pump (TV-ASHP) has been developed combining variable frequency technology with two-stage compression cycle.
将双级压缩和变频技术有机结合，提出一种适用于寒冷地区双级压缩变频空气源热泵系统。
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